αμ

ἁμ

ἐμ , ἐν

in: epic (proclitic indeclform prep )

——————

ἄμ

ἀνά

on board: epic (indeclform prep )

——————

ἅμ

ἄμ , ἀνά

on board: epic (indeclform prep )

ἔμ , ἐν

in: epic (proclitic indeclform prep )